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AbdelQahar

Chose a subarche

Question

@ all : hello !

 

I would like to know what is the best subarch for my computer. The fact is that i'm not a expert in the processors...

 

The informations :

# dmidecode --t processor
# dmidecode 2.12
SMBIOS 2.5 present.

Handle 0x0004, DMI type 4, 40 bytes
Processor Information
	Socket Designation: U2E1
	Type: Central Processor
	Family: Core 2
	Manufacturer: Intel
	ID: FD 06 00 00 FF FB EB BF
	Signature: Type 0, Family 6, Model 15, Stepping 13
	Flags:
		FPU (Floating-point unit on-chip)
		VME (Virtual mode extension)
		DE (Debugging extension)
		PSE (Page size extension)
		TSC (Time stamp counter)
		MSR (Model specific registers)
		PAE (Physical address extension)
		MCE (Machine check exception)
		CX8 (CMPXCHG8 instruction supported)
		APIC (On-chip APIC hardware supported)
		SEP (Fast system call)
		MTRR (Memory type range registers)
		PGE (Page global enable)
		MCA (Machine check architecture)
		CMOV (Conditional move instruction supported)
		PAT (Page attribute table)
		PSE-36 (36-bit page size extension)
		CLFSH (CLFLUSH instruction supported)
		DS (Debug store)
		ACPI (ACPI supported)
		MMX (MMX technology supported)
		FXSR (FXSAVE and FXSTOR instructions supported)
		SSE (Streaming SIMD extensions)
		SSE2 (Streaming SIMD extensions 2)
		SS (Self-snoop)
		HTT (Multi-threading)
		TM (Thermal monitor supported)
		PBE (Pending break enabled)
	Version: CPU Version
	Voltage: 3.3 V
	External Clock: Unknown
	Max Speed: 4096 MHz
	Current Speed: 2000 MHz
	Status: Populated, Enabled
	Upgrade: ZIF Socket
	L1 Cache Handle: 0x0005
	L2 Cache Handle: 0x0006
	L3 Cache Handle: Not Provided
	Serial Number: Not Specified
	Asset Tag: Not Specified
	Part Number: Not Specified
	Core Count: 2
	Core Enabled: 2
	Thread Count: 2
	Characteristics:
		64-bit capable


# cpuid | tail -n 1
   (synth) = Intel Pentium Dual-Core Desktop Processor E2000 (Allendale M0), 65nm

So, core2_64 or corei7 ? I think core2_64 but i'm not sure...

 

Thank you for the answer, and sorry for this question of beginner...

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3 answers to this question

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Gcc supports a "native" target where it detects what cpu its running on and then uses that for almost code generation options.

 

Unless you build on a host that is different from the target, why not use this feature?

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